From patchwork Fri Jul 19 16:19:06 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Charlie Jenkins X-Patchwork-Id: 813554 Received: from mail-pg1-f179.google.com (mail-pg1-f179.google.com [209.85.215.179]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E68581494BA for ; Fri, 19 Jul 2024 16:19:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.179 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721405967; cv=none; b=fR8mP7IQrvjYPyaK/4l+C9qTW6TEojbqXm38ItCakpJ2cf8bbtVlWnXf5L5/J8c7Z1x0xKy4f+GVcrM+Byu0wXi78q3ufOkJseP2sO8G+/+QmiN5pBHwq9rb/mS5Cyzm+fmL7I5oLk1V2k1OldUcHAvDB0hz0pHYJLrFTh8jwW4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721405967; c=relaxed/simple; bh=2W48pS8YjVGGuKgFcdTY4JQ+czvhIHjQutLR0sMQn0M=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=bpKyXCa4ezTrRK0DSSckJ2DmZ8xqAIzE3A+Q/wsATsBn58VhHdUndk/777czPkvYUmmPxRv1p3jyWCy7FGtom9XQr2BAyTfNThyPD56Juc8KeZ/O1nlxC/Q0uDLNzhxCTbD4H3zK1qJUZvecc07P5xAdZh3qHxwuIVQFbwrJp5w= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=rivosinc.com; spf=pass smtp.mailfrom=rivosinc.com; dkim=pass (2048-bit key) header.d=rivosinc-com.20230601.gappssmtp.com header.i=@rivosinc-com.20230601.gappssmtp.com header.b=vLfgT5W3; arc=none smtp.client-ip=209.85.215.179 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=rivosinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=rivosinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=rivosinc-com.20230601.gappssmtp.com header.i=@rivosinc-com.20230601.gappssmtp.com header.b="vLfgT5W3" Received: by mail-pg1-f179.google.com with SMTP id 41be03b00d2f7-79110d8e459so1487648a12.0 for ; Fri, 19 Jul 2024 09:19:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20230601.gappssmtp.com; s=20230601; t=1721405965; x=1722010765; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=RFlUlKNClOcGHl95zNXTKC1SKxBdILei2erBqjtymyU=; b=vLfgT5W3x5RbXUQARm0SjSj9UKSYFLZmC45NKxvt5gQ/WkqkF4+JpZrXVzyGWQwHZ2 GL8X1+HEDREXcsde0gw0zHJchR8zmeQVdVxrKjjVuea71UoFtf4SVXhhIEKW6e+L8C+Z eYsQ+XUMye+1x2u7NixnytpZu5v/b04QuebyTI31PmVjiu5/zpOAzeTxtOh4k64h+lz9 JplGT6Gc3/AWO4YQ3bfj6DuK9pQLEn6DUz/IaHcaQm1zV5+BFZir4IzQQ3JdPYCWjzjS BxAYRaV4dnJyQvFOH+5+jKr/9nuGAnqIxZo3a6oTG29hzwTYeI8pbw3ZOt1A9vRizGIg EucA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1721405965; x=1722010765; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=RFlUlKNClOcGHl95zNXTKC1SKxBdILei2erBqjtymyU=; b=a0AYxDIwL9u5rY4cQ+F1KftUC6xVDa1FwXoVc+CJcACQCJbJqfVxwiygEMrnpsH+GY 6GoQesdhJ0AofmNBfcfVK8wlj+Sg174ceLi5x/qMpZhoaEyHJ4t1AMbaa02pWmBelyeN QMGn/NBxmlQAAVbQG0yQ2Q2D+QEvPmI3T1Bj9xCBN+uknLmHxY2VhIJzflOxr0NPCwEb TFJ/ah3K03izpQedUiiWt9XltsQ0i43NFDksTuOBwrfl2Thwj7cPdxFn7zDjUSeLbfIZ FxrLqBKCfN9jbBNBtVWKsxQx7BBCXqyi9HN5lSWwzJO0KKk3fMBlN2ORTqwj6Xoruqrt LIlw== X-Forwarded-Encrypted: i=1; AJvYcCXixEzIhyV2CtKxjhBvnCxThtbi2itERIqlOy9+46vg61ApYP2WPfrPFPl8ikqK9+l7KCxQQ4MibcIr0o5vyW73F0/rt85Xo4hEqc+tACfz X-Gm-Message-State: AOJu0YzSpCj6NFPqvMUzh6GITSxGidWrJhmxP4pWqq9SJuR9HUJx04Xr Bm8SXEEIYx9PlBFbnsHjUIwc6SUCYvERv1hVtVR0fNLbDOr0Vqtugc5G2dSTtqI= X-Google-Smtp-Source: AGHT+IG+HB2jI/StGSr1RNoXn3VLStcFpRF57Fl88HYhdj4U0L5ilYL3NbTS5IfVnDvuqFD3dzZ+cg== X-Received: by 2002:a05:6a21:99a0:b0:1c4:17e1:14df with SMTP id adf61e73a8af0-1c417e116f0mr3471831637.48.1721405965448; Fri, 19 Jul 2024 09:19:25 -0700 (PDT) Received: from charlie.ba.rivosinc.com ([64.71.180.162]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1fd6f490dcbsm6461435ad.297.2024.07.19.09.19.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 19 Jul 2024 09:19:24 -0700 (PDT) From: Charlie Jenkins Date: Fri, 19 Jul 2024 09:19:06 -0700 Subject: [PATCH v5 11/13] riscv: hwprobe: Document thead vendor extensions and xtheadvector extension Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240719-xtheadvector-v5-11-4b485fc7d55f@rivosinc.com> References: <20240719-xtheadvector-v5-0-4b485fc7d55f@rivosinc.com> In-Reply-To: <20240719-xtheadvector-v5-0-4b485fc7d55f@rivosinc.com> To: Conor Dooley , Rob Herring , Krzysztof Kozlowski , Paul Walmsley , Palmer Dabbelt , Albert Ou , Jisheng Zhang , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Samuel Holland , Jonathan Corbet , Shuah Khan , Guo Ren , Evan Green , Andy Chiu , Jessica Clarke Cc: linux-riscv@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-sunxi@lists.linux.dev, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, Charlie Jenkins X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1721405940; l=1260; i=charlie@rivosinc.com; s=20231120; h=from:subject:message-id; bh=2W48pS8YjVGGuKgFcdTY4JQ+czvhIHjQutLR0sMQn0M=; b=b83pN5cReLz65nLlW1uCxPTq92FYXBW2GeKe7Fpuvsl6LxGyKXlFlAxAXBwI4XgnBGKqCgHTD rGs33ThNbkIBx9DcZJKtD9WQGIoUh6HL3J3yb5Xn9Bv0sGlcUfNgfXU X-Developer-Key: i=charlie@rivosinc.com; a=ed25519; pk=t4RSWpMV1q5lf/NWIeR9z58bcje60/dbtxxmoSfBEcs= Document support for thead vendor extensions using the key RISCV_HWPROBE_KEY_VENDOR_EXT_THEAD_0 and xtheadvector extension using the key RISCV_HWPROBE_VENDOR_EXT_XTHEADVECTOR. Signed-off-by: Charlie Jenkins Reviewed-by: Evan Green --- Documentation/arch/riscv/hwprobe.rst | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/Documentation/arch/riscv/hwprobe.rst b/Documentation/arch/riscv/hwprobe.rst index 02eb4d98b7de..b48a06ef80e0 100644 --- a/Documentation/arch/riscv/hwprobe.rst +++ b/Documentation/arch/riscv/hwprobe.rst @@ -264,3 +264,13 @@ The following keys are defined: * :c:macro:`RISCV_HWPROBE_KEY_HIGHEST_VIRT_ADDRESS`: An unsigned long which represent the highest userspace virtual address usable. + +* :c:macro:`RISCV_HWPROBE_KEY_VENDOR_EXT_THEAD_0`: A bitmask containing the + thead vendor extensions that are compatible with the + :c:macro:`RISCV_HWPROBE_BASE_BEHAVIOR_IMA`: base system behavior. + + * T-HEAD + + * :c:macro:`RISCV_HWPROBE_VENDOR_EXT_XTHEADVECTOR`: The xtheadvector vendor + extension is supported in the T-Head ISA extensions spec starting from + commit a18c801634 ("Add T-Head VECTOR vendor extension. ").